Fix Bug#24980

* lisp/ido.el (ido-add-virtual-buffers-to-list):
Suppress Tramp invocation.  (Bug#24980)

Add a new compile error regexp for Clang includes

Clang uses a slight variation of GCC's include format, causing includes
to be treated as warnings instead of informational messages.  Use a new
regular expression instead.

* lisp/progmodes/compile.el
(compilation-error-regexp-alist-alist): New element
`clang-include' for Clang-style "included from" lines.
* test/lisp/progmodes/compile-tests.el
(compile-tests--test-regexps-data): Add unit test.

Reinstate ispell character offset (bug#25219)

* lisp/textmodes/ispell.el (ispell-process-line): insert -1 where
ispell-offset used to be.

Bind new image-mode scroll commands in image-dired

* lisp/image-dired.el (image-dired-display-image-mode-map): Add bindings
to new image-mode commands.

Fix rx-any with range with ?\] and ?-

* lisp/emacs-lisp/rx.el: Make sure not to produce a circular
list (Bug#25123).
* test/lisp/emacs-lisp/rx-tests.el (rx-char-any): New test.

Use floor of mtime instead of rounding for thumb property

This seems to be the correct thing to do, at least more in line with
what at least one other implementation does.  Anything using
gnome-desktop [0] effectively does the same, as
gnome_desktop_thumbnail_is_valid applies atol(3) to mtime for
comparison and time_t on GNU/Linux is a signed int.
[0] https://git.gnome.org/browse/gnome-desktop/
* lisp/image-dired.el (image-dired-create-thumb): Use floor here.

Fix spelling mistake in private defun name (Bug#25218)

lisp/textmodes/flyspell.el (flyspell-ajust-cursor-point): Rename to
`flyspell-adjust-cursor-point'.

Remove XEmacs support from flyspell.el (Bug#25218)

lisp/textmodes/flyspell.el (flyspell-prog-mode, flyspell-mode-on):
(flyspell-word, flyspell-delete-region-overlays):
(flyspell-correct-word-before-point): Remove XEmacs support.
(flyspell-xemacs-popup): Remove XEmacs-specific defun.

More tests for Tramp

* lisp/net/tramp.el (tramp-drop-volume-letter): Handle quoted
file names.

* lisp/net/tramp-sh.el (tramp-make-copy-program-file-name): Quote file
name properly.

* test/lisp/net/tramp-tests.el (tramp-test05-expand-file-name):
Mark quoted file name as absolute.  (Bug#25183)
(tramp--test-windows-nt-and-batch)
(tramp--test-windows-nt-and-pscp-psftp-p): New defuns.
(tramp--test-windows-nt-or-smb-p): Rename from
`tramp--test-smb-windows-nt-p'.  Adapt callees.
(tramp--test-check-files): Improve checks for environment variables.
(tramp-test33-special-characters)
(tramp-test33-special-characters-with-stat)
(tramp-test33-special-characters-with-perl)
(tramp-test33-special-characters-with-ls, tramp-test34-utf8)
(tramp-test34-utf8-with-stat, tramp-test34-utf8-with-perl)
(tramp-test34-utf8-with-ls): Add more checks for skip.

Fix comments

* src/thread.h (struct thread_state): Fix comments.
* src/process.c (wait_reading_process_output): Fix a typo in
commentary.

Fix crashes on MS-Windows during dumping

* src/unexw32.c (get_section_info): Make extra_bss_size be the
maximum of extra_bss_size and extra_bss_size_static.  This avoids
computing the size of the output file smaller than it actually
needs to be, which then causes copy_executable_and_dump_data to
write beyond the requested size of the file mapping, thus relying
on the OS roundup to page boundary to save us from ourselves.  See
http://lists.gnu.org/archive/html/emacs-devel/2016-12/msg00642.html
for the details.

* lib/stdio-impl.h: Revert the workaround fix of not including
errno.h for MinGW.

Be more selective clearing the image cache

* lisp/image-dired.el (image-dired-create-thumbs):
(image-dired-rotate-thumbnail, image-dired-refresh-thumb): Only clear
the current thumbnail file from the image cache.

Unbreak the MinGW build

* lib/stdio-impl.h [__MINGW32__]: Don't include errno.h.  Without
this, temacs crashes while dumping.

Make seq-into return the sequence when no conversion needed

* lisp/emacs-lisp/seq.el (seq-into): Do not convert the sequence when
  no conversion is needed.
* test/lisp/emacs-lisp/seq-tests.el (test-seq-into-and-identity): Add
  a regression test checking for identity.

New commands image-scroll-left and image-scroll-right

* etc/NEWS: Mention them.
* lisp/image-mode.el (image-scroll-left, image-scroll-right): New
functions.

More image-dired refactoring

* lisp/image-dired.el (image-dired-thumbnail-mode):
(image-dired-display-image-mode): Add :group 'image-dired so
customize-mode works.
(image-dired-display-image): Rearrange.
(image-dired-copy-with-exif-file-name): This map is for side effect.
(image-dired-dired-edit-comment-and-tags): Just use #'identity.

* lisp/image-dired.el: Turn on lexical-binding.

Teach image-dired to also generate large thumbs

* lisp/image-dired.el (image-dired-thumbnail-storage): Add
standard-large option.
(image-dired-thumb-size): Add condition for standard-large storage.
(image-dired-insert-thumbnail): Check for new option.  Change
thumbnail path conditionally.
(image-dired-thumb-size): New function.
(image-dired-create-thumb, image-dired-line-up-dynamic): Use it.

Merge from gnulib

This incorporates:
2016-12-14 xalloc-oversized: check for PTRDIFF_MAX too
2016-12-12 fpending: port to native Windows with MSVC
* .gitignore: Do not ignore lib/stdio-impl.h.
* lib/fpending.c, lib/xalloc-oversized.h, m4/fpending.m4:
Copy from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* lib/stdio-impl.h:
New file, copied from gnulib.
* nt/gnulib.mk (EXTRA_DIST): Add stdio-impl.h.

* emacs-document.svg: Append newline.

Don't abuse princ and spam messages

* lisp/image-dired.el (image-dired-format-properties-string): Nix princ.
(image-dired-display-thumb-properties):
(image-dired-dired-display-properties): Nix princ.  Bind
message-log-max to nil.

Inherit things from special-mode and image-mode

* lisp/image-dired.el: Require image-mode library.
(image-dired-thumbnail-mode-map): Remove superfluous binding.
(image-dired-display-image-mode-map): Remove superfluous binding.
Add movement remaps from image-mode-map.
(image-dired-thumbnail-mode): Derive from special-mode.
(image-dired-display-image-mode): Derive from special-mode. Call
image-mode-setup-winprops.

Fix some image-dired customization types

* lisp/image-dired.el (image-dired): Add info link to defgroup.
(image-dired-dir, image-dired-gallery-dir): Set type to directory.
(image-dired-db-file, image-dired-temp-image-file):
(image-dired-cmd-create-thumbnail-program):
(image-dired-cmd-create-temp-image-program):
(image-dired-cmd-rotate-thumbnail-program):
(image-dired-cmd-rotate-original-program):
(image-dired-temp-rotate-image-file):
(image-dired-cmd-write-exif-data-program):
(image-dired-cmd-read-exif-data-program): Set type to file.
(image-dired-create-thumb, image-dired-line-up-dynamic): Check storage
type at runtime, since setting image-dired-thumb-size does not
automatically set image-dired-thumb-width and image-dired-thumb-height.

Prevent crashes in xg_select due to concurrency

* src/xgselect.c (xg_select): Don't call Glib functions that use
'context' if we failed to acquire it.  This means some other
thread owns the context, in which case both using the context and
calling block_input/unblock_input will step on that thread's toes
and eventually lead to crashes.  (Bug#25172)

Fix circular list handling in seq-mapn

* lisp/emacs-lisp/seq.el (seq-mapn): Do not copy list arguments.
* test/lisp/emacs-lisp/seq-tests.el (test-seq-mapn-circular-lists):
  Add a regression test.

Check in tramp-tests.el, that environment variables are set correctly

* test/lisp/net/tramp-tests.el (tramp--test-check-files):
Check also, that environment variables are set correctly.

Protect environment variables with double quotes in Tramp

* lisp/net/tramp-sh.el (tramp-open-connection-setup-interactive-shell):
Protect environment variables with double quotes.

Copyright-paperwork-exempt: yes

* lisp/ibuf-macs.el (define-ibuffer-filter): Wrap ,@body in a progn.

* lisp/image-dired.el (image-dired-create-thumb): Create parent directories.

* lisp/image-mode.el (image-mode-winprops-alist): Add docstring.

Recognize pngnq or pngnq-s9

* lisp/image-dired.el (image-dired-cmd-pngnq-program): Also consider
pngnq-s9 as a possible executable.

Update standard image-dired thumbnail location

* lisp/image-dired.el (image-dired-thumb-name): Conform to the latest
standard: consider XDG_CACHE_HOME, falling back on ~/.cache.

Reset window scroll when displaying an image

When viewing a large image full size and scrolling, for instance, to
the lower right corner, then selecting a much smaller image in the
thumbnail buffer, the window stays scrolled so the new image is out of
the window.  One must scroll back to the "origin" to view the new
displayed image, or just kill the image-dired-display-image buffer and
try again.  This fixes the issue.
* lisp/image-dired.el (image-dired-display-window-width):
(image-dired-display-window-height): Operate on a window as argument.
(image-dired-display-image): Bind (image-dired-display-window) and use
it. Set window vscroll and hscroll to zero when refreshing the
buffer's contents.

More image-dired polish

* lisp/image-dired.el (image-dired-file-name-at-point): New function.
(image-dired-thumbnail-mode, image-dired-display-image-mode): Disable
undo list. Add image-dired-file-name-at-point to
file-name-at-point-functions to facilitate find-file and friends.
(image-dired-thumbnail-display-external):
(image-dired-dired-display-external): Use start-process instead, to
avoid needlessly blocking and using a shell.

Replace ldefs-boot with a much smaller file

 * Makefile.in (bootstrap-build,generate-ldefs-boot): New targets.
   (bootstrap): Depend on bootstrap-build.
 * admin/ldefs-clean.el: New file.
 * lisp/Makefile.in (compile-first): Depend on loaddefs.el
 * lisp/ldefs-boot.el: Remove.
 * lisp/ldefs-boot-auto.el: New file.
 * lisp/ldefs-boot-manual.el: New file.
 * lisp/loadup.el: Load ldefs-boot-manual.el.
 * src/emacs.c (generating_ldefs_boot): New variable.
   (main): Check whether we are generating ldefs.
 * src/eval.c (autoload-do-load): Dump autoload forms to stderr when
   requested.
 * src/lisp.h (generating_ldefs_boot): New variable.
 * admin/gitmerge.el, admin/make-tarball.txt, admin/notes/copyright,
   lisp/Makefile.in, lisp/cus-dep.el, lisp/emacs-lisp/elint.el,
   lisp/finder.el, lisp/loadup.el, msdos/mainmake.v2: Update reference to
   ldefs-boot.
 * admin/update_autogen: Alter mechanism for ldefs-boot generation.

Remove support for aspell < 0.60 (from 2004)

lisp/textmodes/ispell.el (ispell-check-version): Require Aspell 0.60.
(ispell-aspell-dictionary-alist): Remove check that we have Aspell 0.60.

Minor docstring and comment fixes to ispell.el

lisp/textmodes/ispell.el (ispell-aspell-dictionary-alist): Mention
ispell-aspell-dictionary-alist, not ispell-dictionary-alist.
(ispell-set-spellchecker-params): Change double-single quotes to
single single quotes in comment.

Remove unused variable

* lisp/textmodes/ispell.el (current-ispell-directory): Remove.

Remove XEmacs-specific ispell-with-no-warnings

* lisp/textmodes/ispell.el (ispell-with-no-warnings): Remove this
defmacro, needed only for XEmacs.
(ispell-command-loop, ispell-message): Use with-no-warnings directly.

Remove meaningless defconst ispell-version

* lisp/textmodes/ispell.el (ispell-version): Since ispell.el is now
firmly part of Emacs, and the version hasn’t changed since 2003, and
isn’t used anywhere, remove it.  3rd-party code can better use the
Emacs version, or feature or function checks.
(ispell-check-version): No longer report ispell.el version.

Remove boundp test for always-bound symbol

* lisp/textmodes/ispell.el (ispell-message): mail-yank-prefix is
defvar’d at the top of the file, so remove a test to see if it is
bound.

Remove support for ispell < 3.1.12

* lisp/textmodes/ispell.el (ispell-offset): Remove.
(ispell-check-version): Require ispell >= 3.1.12, released in 1994.
(ispell-process-line): No longer use ispell-offset.

Remove unused constant

* lisp/textmodes/ispell.el (ispell-required-version): Remove.

Remove support for old versions of supercite and GNUS from ispell.el

* lisp/textmodes/ispell.el (ispell-message): Require supercite >= 3.0
and GNUS >= 5.  Not exactly the bleeding edge!

Remove remaining mentions of XEmacs from ispell.el

* lisp/textmodes/ispell.el (ispell-valid-dictionary-list):
(ispell-add-per-file-word-list): Remove mentions of XEmacs from
comments.

Remove XEmacs-specific minibuffer handling code from ispell.el

* lisp/textmodes/ispell.el (ispell-init-process): Assume we are not in
XEmacs.

Remove XEmacs-specific horizontal scrollbar handling in ispell.el

* lisp/textmodes/ispell.el (ispell-command-loop): Remove
XEmacs-specific code.

Remove XEmacs-specific code dealing with enable-multibyte-characters

* lisp/textmodes/ispell.el (ispell-decode-string):
(ispell-init-process):  Remove XEmacs-specific guard.

Remove XEmacs-specific code from ispell.el

* lisp/textmodes/ispell.el (ispell-menu-xemacs): Remove
(ispell-menu-map-needed): Remove XEmacs-specific check.
(ispell-word): Remove XEmacs-specific extent code.
(ispell-init-process): Remove XEmacs workaround for local add-hook.
Assume we have set-process-query-on-exit-flag.
(ispell-kill-ispell, ispell-change-dictionary): Remove XEmacs
workaround for called-interactively-p.

Remove some commented-out code

lisp/textmodes/ispell.el (ispell-process)
ispell-valid-dictionary-list): Remove commented-out code.

Remove XEmacs and old Emacs highlighting code

* lisp/textmodes/ispell.el
(ispell-highlight-spelling-error-xemacs): Remove.
(ispell-highlight-spelling-error): Assume display-color-p exists.

Assume Emacs supports [:alpha:] in regexps

* lisp/textmodes/ispell.el (ispell-emacs-alpha-regexp): Remove.
(ispell-set-spellchecker-params): Remove tests of
ispell-emacs-alpha-regexp.

Remove some XEmacs-specific code from ispell.el

* lisp/textmodes/ispell.el: Remove XEmacs menubar setup.
(ispell-int-char): Remove.

Generalise over-specific documentation

* lisp/textmodes/ispell.el (ispell-personal-dictionary): Rather than
document precise personal wordlist filenames for only two supported
spelling checkers, simply say that the default personal dictionary
depends on the chosen spelling checker.  The user can check the
spelling checker’s documentation if necessary.  This is simpler, and
works for other supported (and future, or unknown) spelling checkers.

Remove tests for built-in functions

* lisp/textmodes/ispell.el (buffer-substring-no-properties): Remove
back-up definition.
(ispell-add-per-file-word-list): Remove tests for comment-padright and
comment-normalize-vars.

Remove unused ispell-looking-back

* lisp/textmodes/ispell.el (ispell-looking-back): Remove unused alias.

Assume we have version<= for checking ispell version

* lisp/textmodes/ispell.el (ispell-check-minver): Remove.
(ispell-check-version): Use version<= directly.

Remove ispell.el pre-GNU Emacs comments

* lisp/textmodes/ispell.el (Commentary): Remove original maintainer
  details, as Emacs version, bug report address and so forth should be
  used instead for this version.  Remove in-line change history; use
  git instead.

More small fixes for image-dired

* lisp/image-dired.el: Fix commentary to refer to correct Emacs manual
node.
(image-dired--with-db-file): Add declare forms.
(image-dired-hidden-p): Rewrite with cl-loop.  It's not necessary to
run through the whole list.

Remove image-dired-kill-buffer-and-window

This breaks window layout, especially when quitting a
image-dired-display-image-mode buffer.
* lisp/image-dired.el (image-dired-thumbnail-mode-map):
(image-dired-display-image-mode-map): Replace in keymap and menu items
bindings to image-dired-kill-buffer-and-window with quit-window.
(image-dired-kill-buffer-and-window): Remove.

Replace image-dired-setup-dired-keybindings with a minor mode

* lisp/image-dired.el (image-dired-thumbnail-mode): Fix docstring to
remove mention of nonexistent image-dired-dired and to refer to the
new minor mode.
(image-dired-minor-mode-map): New keymap assimilated from
image-dired-setup-dired-keybindings.  In the future, the keymap parent
should be removed, and perhaps also the duplicate bindings that
already exist in dired-mode-map.
(image-dired-setup-dired-keybindings): Remove.  Replace with an
obsolete function alias.
(image-dired-minor-mode): New minor mode, assuming the role of
image-dired-setup-dired-keybindings.

* test/src/regex-resources/PTESTS: Convert to UTF-8.

Clarify thread-signal semantics

* doc/lispref/threads.texi (Basic Thread Functions): Explain that the
thread will be signaled as soon as possible.

Clean up var watcher disabling on thread switching

* src/data.c (Fset_default): Move code into new C level function,
`set_default_internal'.
(set_default_internal): New function, like `Fset_default' but also takes
additional bindflag parameter.
(set_internal): Only call `notify_variable_watchers' if bindflag is not
SET_INTERNAL_THREAD_SWITCH.
* src/eval.c (do_specbind, do_one_unbind): Add bindflag parameter,
passed on to set_internal and set_default_internal.  Adjust callers.
(rebind_for_thread_switch, unbind_for_thread_switch): Pass
SET_INTERNAL_THREAD_SWITCH to do_specbind, do_one_unbind instead of
temporarily adjusting symbol's trapped_write field.

Minor fix for define-derived-mode

* lisp/emacs-lisp/derived.el (define-derived-mode):
Do not let eg eval-defun reset the values of syntax or abbrev tables,
since they might have been defined externally.  (Bug#16160)

* build-aux/git-hooks/pre-commit: Add whitespace comment.

Move backtrace to ELisp using a new mapbacktrace primitive

* src/eval.c (get_backtrace_starting_at, backtrace_frame_apply)
(Fmapbacktrace, Fbacktrace_frame_internal): New functions.
(get_backtrace_frame, Fbacktrace_debug): Use `get_backtrace_starting_at'.

* lisp/subr.el (backtrace--print-frame): New function.
(backtrace): Reimplement using `backtrace--print-frame' and `mapbacktrace'.
(backtrace-frame): Reimplement using `backtrace-frame--internal'.

* lisp/emacs-lisp/debug.el (debugger-setup-buffer): Pass a base to
`mapbacktrace' instead of searching for "(debug" in the output of
`backtrace'.

* test/lisp/subr-tests.el (subr-test-backtrace-simple-tests)
(subr-test-backtrace-integration-test): New tests.

* doc/lispref/debugging.texi (Internals of Debugger): Document
`mapbacktrace' and missing argument BASE of `backtrace-frame'.

Use C99 syntax for font drivers

Problem reported by Daniel Colascione in:
http://lists.gnu.org/archive/html/emacs-devel/2016-12/msg00515.html
* src/ftcrfont.c (ftcrfont_driver):
* src/ftfont.c (ftfont_driver):
* src/ftxfont.c (ftxfont_driver):
* src/macfont.m (macfont_driver):
* src/nsfont.m (nsfont_driver):
* src/xfont.c (xfont_driver):
* src/xftfont.c (xftfont_driver):
Use C99 syntax, not the old GNU C syntax.

Obsolete gs.el

* lisp/gs.el: Move to lisp/obsolete.  (Bug#1524)
* doc/lispref/display.texi (Image Formats): Remove postscript.
(PostScript Images): Remove section.
* doc/lispref/elisp.texi: Update menu.

Un-revert recent Ffset change

* src/data.c (Ffset): Reinstate the check for "nil".

Minor advice.el fix

* lisp/emacs-lisp/advice.el (ad-preactivate-advice):
Avoid setting the function definition of nil.
This was happening during bootstrap of org-compat.el,
apparently due to eager macro expansion of code behind
a (featurep 'xemacs) test.

Make etags-tests work in out-of-tree builds

* test/lisp/progmodes/etags-tests.el (etags-bug-158)
(etags-bug-23164): Make them work in an out-of-tree build.
Reported by Ken Brown <kbrown@cornell.edu>.

Avoid crashing if a new thread is signaled right away

* src/thread.c (post_acquire_global_lock): Don't raise the pending
signal if the thread's handlers were not yet set up, as that will
cause Emacs to exit with a fatal error.  This can happen if a
thread is signaled as soon as make-thread returns, before the new
thread had an opportunity to acquire the global lock, set up the
handlers, and call the thread function.

* test/src/thread-tests.el (thread-signal-early): New test.

Fix point motion in cloned buffers

* src/thread.c (post_acquire_global_lock): Call
set_buffer_internal_2 instead of tricking set_buffer_internal_1
into resetting the current buffer even if it didn't change.  This
avoids bug#25165, caused by failing to record the modified values
of point and mark, because current_buffer was set to NULL.  Also,
don't bother re-setting the buffer if there was no thread switch,
as that just wastes cycles.
* src/buffer.c (set_buffer_internal_2): New function, with most of
the body of set_buffer_internal_1, but without the test for B
being identical to the current buffer.
(set_buffer_internal_1): Call set_buffer_internal_2 if B is not
identical to the current buffer.
* src/buffer.h (set_buffer_internal_2): Add prototype.

* test/src/thread-tests.el (thread-sticky-point): New test.

Further improvements in Tramp's file name unquoting

* lisp/net/tramp-adb.el (tramp-adb-handle-file-local-copy)
(tramp-adb-handle-write-region): Unquote localname.
(tramp-adb-handle-copy-file): Implement direct copy on remote device.
(tramp-adb-handle-rename-file): Quote arguments, add "-f" to force.

* lisp/net/tramp.el (tramp-file-name-unquote-localname): New defun.
(tramp-handle-file-name-case-insensitive-p):
* lisp/net/tramp-gvfs.el (tramp-gvfs-get-file-attributes)
(tramp-gvfs-connection-mounted-p, tramp-gvfs-mount-spec)
(tramp-gvfs-maybe-open-connection):
* lisp/net/tramp-sh.el (tramp-make-copy-program-file-name):
* lisp/net/tramp-smb.el (tramp-smb-get-share)
(tramp-smb-get-localname): Use it.

* test/lisp/net/tramp-tests.el (tramp--test-docker-p): New defun.
(tramp--test-special-characters, tramp-test34-utf8)
(tramp-test34-utf8-with-stat, tramp-test34-utf8-with-perl)
(tramp-test34-utf8-with-ls): Use it.

Strengthen conditions for resizing sibling windows (Bug#25169)

* lisp/window.el (window-resize, delete-window): Resize other siblings
only if `window-combination-resize' equals t (Bug#25169).

Quote filenames containing '~' in prompts

When in a directory named '~', the default value given by
`read-file-name' should be quoted by prepending '/:', in order to
prevent it from being interpreted as referring to the $HOME
directory (Bug#16984).

* lisp/minibuffer.el (minibuffer-maybe-quote-filename): New function.
(completion--sifn-requote, read-file-name-default): Use it instead of
`minibuffer--double-dollars'.
* test/lisp/files-tests.el (files-test-read-file-in-~): Test it.

Undo part of last change

* src/thread.h:
* src/keyboard.c:
* src/keyboard.h: Undo part of last change:
input_available_clear_time is again a global variable.

Avoid aborts when a thread signals an error

* src/thread.h (struct thread_state): Add members
m_waiting_for_input and m_input_available_clear_time.
(waiting_for_input, input_available_clear_time): New macros.
* src/keyboard.c (waiting_for_input, input_available_clear_time):
Remove; they are now macros that reference the current thread.
(Bug#25171)
* src/w32select.c: Don't include keyboard.h.

* test/src/thread-tests.el (thread-errors): New test.

Clean up compile-tests.el

Switch to lexical binding.  Make checkdoc happy.

* test/lisp/progmodes/compile-tests.el (compile--test-error-line)
(compile-test-error-regexps): Instead of checking a single Boolean
value, use `should' for each attribute of the message to be compared.
(compile-tests--test-regexps-data): Document sixth list element
TYPE.

; Change maintainer comment
Ref http://debbugs.gnu.org/10934#23

Improve previous cperl-mode change

* lisp/progmodes/cperl-mode.el (cperl-mode-abbrev-table):
Improve previous change.

Mark default cperl abbrevs as system ones

* lisp/progmodes/cperl-mode.el (cperl-mode):
Mark our abbrevs as system ones.  (Bug#10934)

Revert earlier Ffset change

* src/data.c (Ffset): Allow nil again, since it caused
eager macro-expansion failures.

Tweaks for message bogus address detection

* lisp/gnus/message.el (message-bogus-recipient-p):
Do not require "@", since some mailers deliver to local addresses
without one.  (Bug#23054)
Move "@.*@" from here...
(message-bogus-addresses): ...to here, so it can be customized.

Do not allow nil to be defined as a function

* lisp/emacs-lisp/byte-run.el (defun):
* src/data.c (Ffset): Do not allow "nil".  (Bug#25110)

Add some sanity checking of defun arglist

* lisp/emacs-lisp/byte-run.el (defun):
Check for malformed argument lists.  (Bug#15715)

Minor shell-mode fix for zsh

* lisp/shell.el (shell-mode): Prevent shell-dirstack-query
becoming confused by zsh abbreviations.  (Bug#24632)

Copyright-paperwork-exempt: yes

* Makefile.in (install-etc): Don't prepend $(DESTDIR) to commands in
system unit file.

; Fix copyright years in new files

; Update file name in comment

Support concurrency in Emacs Lisp

Merge branch 'test-concurrency'

* src/thread.c:
* src/thread.h:
* src/systhread.c:
* src/systhread.h: New files.
* src/xgselect.c (xg_select): Avoid using SAFE_NALLOCA and use
xnmalloc unconditionally.
* src/window.c (struct save_window_data): Rename current_buffer to
f_current_buffer.
* src/w32proc.c (sys_select): Change the function signature to
closer fit 'pselect' on Posix hosts.
* src/search.c:
* src/regex.h: Convert some globals to macros that reference
thread-specific values.
* src/process.c (pset_thread, add_non_keyboard_read_fd)
(add_process_read_fd, add_non_blocking_write_fd)
(recompute_input_desc, compute_input_wait_mask)
(compute_non_process_wait_mask, compute_non_keyboard_wait_mask)
(compute_write_mask, clear_waiting_thread_info)
(update_processes_for_thread_death, Fset_process_thread)
(Fprocess_thread): New functions.
(enum fd_bits): New enumeration.
(fd_callback_data): Add 'thread' and 'waiting_thread', rename
'condition' to 'flags'.
(set_process_filter_masks, create_process, create_pty)
(Fmake_serial_process, finish_after_tls_connection)
(connect_network_socket, deactivate_process)
(server_accept_connection, wait_reading_process_output)
(Fcontinue_process, Fstop_process, keyboard_bit_set)
(add_timer_wait_descriptor, add_keyboard_wait_descriptor)
(delete_keyboard_wait_descriptor): Use the new functions instead
of manipulating fd flags and masks directly.
(syms_of_process): Defsubr the new primitives.
* src/print.c (print_object): Print threads, mutexes, and
conditional variables.
* src/lisp.h (enum pvec_type): New values PVEC_THREAD, PVEC_MUTEX,
and PVEC_CONDVAR.
(XTHREAD, XMUTEX, XCONDVAR, THREADP, MUTEXP, CONDVARP)
(CHECK_THREAD, CHECK_MUTEX, CHECK_CONDVAR): New inline functions.
(XSETTHREAD, XSETMUTEX, XSETCONDVAR): New macros.
(struct handler): Add back byte_stack.  Rename lisp_eval_depth to
f_lisp_eval_depth.
* src/eval.c (specpdl_kind, specpdl_arg, do_specbind)
(rebind_for_thread_switch, do_one_unbind)
(unbind_for_thread_switch): New functions.
(init_eval): 'handlerlist' is not malloc'ed.
(specbind): Call do_specbind.
(unbind_to): Call do_one_unbind.
(mark_specpdl): Accept 2 arguments.
(mark_specpdl): Mark the saved value in a let-binding.
* src/emacs.c (main): Call init_threads_once, init_threads, and
syms_of_threads.
* src/data.c (Ftype_of): Support thread, mutex, and condvar
objects.
(Fthreadp, Fmutexp, Fcondition_variable_p): New functions.
(syms_of_data): DEFSYM and defsubr new symbols and primitives.
* src/bytecode.c (struct byte_stack, FETCH, CHECK_RANGE)
(BYTE_CODE_QUIT): Add back.
(exec_byte_code): Add back byte stack manipulation.
* src/alloc.c (cleanup_vector): Handle threads, mutexes, and
conditional variables.
(mark_stack): Now extern; accept additional argument 'bottom'.
(flush_stack_call_func): New function.
(garbage_collect_1): Call mark_threads and unmark_threads.  Don't
mark handlers.
* src/.gdbinit (xbytecode): Add back.

* test/src/thread-tests.el: New tests.
* test/src/data-tests.el (binding-test-manual)
(binding-test-setq-default, binding-test-makunbound)
(binding-test-defvar-bool, binding-test-defvar-int)
(binding-test-set-constant-t, binding-test-set-constant-nil)
(binding-test-set-constant-keyword)
(binding-test-set-constant-nil): New tests.

* doc/lispref/processes.texi (Processes and Threads): New
subsection.
* doc/lispref/threads.texi: New file
* doc/lispref/elisp.texi (Top): Include it.
* doc/lispref/objects.texi (Thread Type, Mutex Type)
(Condition Variable Type): New subsections.
(Type Predicates): Add thread-related predicates.
* doc/lispref/objects.texi (Editing Types):
* doc/lispref/elisp.texi (Top): Update higher-level menus.

* etc/NEWS: Mention concurrency features.

Fix error messages in thread.c

* src/thread.c (lisp_mutex_unlock, Fcondition_wait)
(Fcondition_notify, Fthread_join): Fix error messages.

Improve doc strings in thread.c

* src/thread.c (Fmake_condition_variable, Fcondition_wait)
(Fcondition_notify, Fcondition_mutex, Fcondition_name, Fmake_thread)
(Fthread_join, Fall_threads): Doc fixes.

Fix building with check-lisp-object-type

* src/thread.c (mark_one_thread): Use NILP to compare with
m_saved_last_thing_searched, which is a Lisp object.  Reported by
Andreas Politz <politza@hochschule-trier.de>.

Documentation and commentary improvements

* src/lisp.h:
* src/regex.c:
* src/xgselect.c (xg_select): Improve commentary and formatting.

* doc/lispref/objects.texi (Thread Type, Mutex Type)
(Condition Variable Type): New subsections.
(Type Predicates): Add thread-related predicates.
* doc/lispref/objects.texi (Editing Types):
* doc/lispref/elisp.texi (Top): Update higher-level menus.

Fix further problems with quoted file names in Tramp

* lisp/net/tramp.el (tramp-quoted-name-p, tramp-quote-name)
(tramp-unquote-name): Move defsubst ...
* lisp/net/tramp-compat.el (tramp-compat-file-name-quoted-p)
(tramp-compat-file-name-quote)
(tramp-compat-file-name-unquote): ... here. Adapt callees.

* lisp/net/tramp-cache.el (tramp-flush-file-property)
(tramp-flush-directory-property):
* lisp/net/tramp-gvfs.el (tramp-gvfs-url-file-name):
* lisp/net/tramp-sh.el (tramp-make-copy-program-file-name):
* lisp/net/tramp-smb.el (tramp-smb-handle-copy-file)
(tramp-smb-handle-substitute-in-file-name)
(tramp-smb-get-share, tramp-smb-get-localname): Handle quoted files.

*src/sysdep.c: Fix a comment.

Fix compilation error on Fedora 24

* src/sysdep.c [HAVE_H_ERRNO]: Remove declaration of h_errno.
Reported by Paul Eggert <eggert@cs.ucla.edu>.

Fix compilation warnings due to prototype of thread_select

* src/thread.h <int select_func>: Make the 5th and 6th arguments
be 'const'.
* src/process.c [WINDOWSNT]:
* src/w32proc.c: Make the 5th and 6th argument to sys_select be
'const'.